Whatever amount of evidence creates probable cause.
Never, because shooting somebody is breaking the law and murder.
The complaint itself is evidence. If the officer feels that the complaint fills the need for probable cause, they may arrest on just that information.
Are you retarded? If the person tells the police everything when caught or you are linked to it by them and they have evidence. you're looking at accessory to murder/attempted murder,if not straight up murder.
"You are under arrest!" said the police officer.
There are no statutes of limitations on the prosecution of homicide or murder.
If a victim makes a report to the police and the police have either evidence, or a 'reasonable cause to believe,' that the assault took place, they may make an arrest.
No its called a citazens arrest as long as you tell the police and have evidence of what they have done its not wrong
no
The policemen were arresting the burglars after finding them red-handed.
You could try a citizen's arrest but the police man may refuse to be arrested. It is only a warranted police officer that is empowered by society to forcibly arrest someone.
It depends on what crime you have been accused of. And yes, if someone files a report on you they can arrest you with evidence for a minimum of 48hours even if the report turns out wrong.
police officers have a criteria on this. On the other hand,for an officer of the law, it would be unethical not to arrest someone he has seen comiting a crime.